Best Practices for OINDP Pharmaceutical Development Programs Leachables and Extractables PQRI Leachables & Extractables Working Group PQRI Training Course.

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Best Practices for OINDP Pharmaceutical Development Programs Leachables and Extractables PQRI Leachables & Extractables Working Group PQRI Training Course September 20-21, 2006 Washington, DC

What are leachables and extractables? Extractables – Compounds that can be extracted from elastomeric, plastic components or coatings of the container and closure system when in the presence of an appropriate solvent(s). Extractables – Compounds that can be extracted from elastomeric, plastic components or coatings of the container and closure system when in the presence of an appropriate solvent(s). Leachables – Compounds that leach from elastomeric, plastic components or coatings of the container and closure system as a result of direct contact with the formulation. Leachables – Compounds that leach from elastomeric, plastic components or coatings of the container and closure system as a result of direct contact with the formulation.

What are OINDP? Metered Dose Inhalers Dry Powder Inhalers Inhalation Solutions Inhalation Sprays Nasal Sprays MDI Schematic Provided by Bespak Europe

Why are we interested leachables and extractables? FDA Guidances:FDA Guidances: Metered Dose Inhaler (MDI) and Dry Powder Inhaler (DPI) Drug Products Chemistry, Manufacturing, and Controls Documentation;Metered Dose Inhaler (MDI) and Dry Powder Inhaler (DPI) Drug Products Chemistry, Manufacturing, and Controls Documentation; Nasal Spray and Inhalation Solution, Suspension, and Spray Drug Products Chemistry, Manufacturing, and Controls Documentation Nasal Spray and Inhalation Solution, Suspension, and Spray Drug Products Chemistry, Manufacturing, and Controls Documentation Approvals:Approvals: We want them!!!!!!!We want them!!!!!!! Ethical and professional obligations.Ethical and professional obligations.

We want approvals!!!!!!!!!!!!!!

I’ve heard it all!!!!!!!!!! “A person is exposed to more PNAs standing behind a city bus than from an MDI.” “One charbroiled steak is equal to 1,000,000 MDIs!” “Bloody Americans – over the top as usual!!!!!!” “We have horror-stories.”

What is PQRI? Product Quality Research Institute Product Quality Research Institute Not-for-profit, non-stock, tax-exempt entity incorporated in Virginia Not-for-profit, non-stock, tax-exempt entity incorporated in Virginia Serves as a forum for academia, industry and FDA to work cooperatively Serves as a forum for academia, industry and FDA to work cooperatively Working Group on Leachables and Extractables currently in operation Working Group on Leachables and Extractables currently in operation

PQRI Member Organizations AAPS AAPS Consumer Healthcare Products Association Consumer Healthcare Products Association GPhA GPhA PDA PDA PhRMA PhRMA U.S. FDA, Center for Drug Evaluation and Research U.S. FDA, Center for Drug Evaluation and Research BIO BIO International Pharmaceutical Aerosol Consortium on Regulation & Science (IPAC-RS) International Pharmaceutical Aerosol Consortium on Regulation & Science (IPAC-RS) International Pharmaceutical Excipients Council of the Americas (IPEC) International Pharmaceutical Excipients Council of the Americas (IPEC) USP USP

The International Pharmaceutical Aerosol Consortium (IPAC) formed in 1989 to address regulatory consequences for MDIs of Montreal and Kyoto ProtocolsThe International Pharmaceutical Aerosol Consortium (IPAC) formed in 1989 to address regulatory consequences for MDIs of Montreal and Kyoto Protocols In 2001, the International Pharmaceutical Aerosol Consortium for Regulation and Science (IPAC-RS) was officially formed as a separate ConsortiumIn 2001, the International Pharmaceutical Aerosol Consortium for Regulation and Science (IPAC-RS) was officially formed as a separate Consortium IPAC-RS Mission: To advance consensus- based and scientifically driven standards and regulations for inhaled and nasal drug products (OINDP).IPAC-RS Mission: To advance consensus- based and scientifically driven standards and regulations for inhaled and nasal drug products (OINDP). IPAC-RS Overall Goal: Development of scientifically justified regulatory approaches for orally inhaled and nasal drug productsIPAC-RS Overall Goal: Development of scientifically justified regulatory approaches for orally inhaled and nasal drug products

History of PQRI Leachables and Extractables Working Group Proposal to develop thresholds and examine best practices for L&E in OINDP drafted by IPAC-RS and submitted to PQRI Proposal to develop thresholds and examine best practices for L&E in OINDP drafted by IPAC-RS and submitted to PQRI Working Group formed in 2001, consisting of chemists and toxicologists from FDA, industry and academia Working Group formed in 2001, consisting of chemists and toxicologists from FDA, industry and academia Working Group developed a hypothesis and step-wise plan to investigate per established PQRI process Working Group developed a hypothesis and step-wise plan to investigate per established PQRI process Workplan approved by PQRI DPTC and Steering Committee in 2002 Workplan approved by PQRI DPTC and Steering Committee in 2002 Toxicologists and chemists formed sub-groups Toxicologists and chemists formed sub-groups

History of PQRI Leachables and Extractables Working Group Toxicologists: acquired data through extensive literature and database searches and analyses Toxicologists: acquired data through extensive literature and database searches and analyses Chemists: acquired data by conducting extractions studies and placebo leachables study Chemists: acquired data by conducting extractions studies and placebo leachables study Developed recommendations, “Safety Thresholds and Best Practices for Leachables and Extractables Testing in Orally Inhaled and Nasal Drug Products” Developed recommendations, “Safety Thresholds and Best Practices for Leachables and Extractables Testing in Orally Inhaled and Nasal Drug Products” Submitted final to PQRI and FDA in summer 2006 Submitted final to PQRI and FDA in summer 2006  Science and data-based recommendations to PQRI and FDA. Not a policy/regulatory document

Leachables and Extractables Working Group Members Dan Norwood, Chair (IPAC-RS) Doug Ball (IPAC-RS) Jim Blanchard (IPAC-RS) Lidiette Celado (AAPS) Fran DeGrazio (PDA) T.J. Deng (Lab - PPD) Bill Doub (Lab - FDA) Tom Feinberg (AAPS) Alan Hendricker (Lab - Cardinal) Jeff Hrkach (AAPS) Roger McClellan (UNM) Tim McGovern (FDA) Diane Paskiet (PDA) Paul Curry (USP) Michael Ruberto (Lab - CIBA) Alan Schroeder (FDA) Mark Vogel (PhRMA) Charles Wang (PhRMA) Ron Wolff (IPAC-RS) Michael Golden (DPTC, IPAC-RS) Guirag Poochikian (DPTC, FDA) Gordon Hansen (SC, IPAC-RS)

Recommendation Document Overview Introduction and Summary of Recommendations Introduction and Summary of Recommendations Derivation and justification of safety thresholds, and application of safety thresholds Derivation and justification of safety thresholds, and application of safety thresholds Chemistry Best Practices Chemistry Best Practices Appendices Appendices

Best Practices Overview Application of safety thresholds Application of safety thresholds  Safety Concern Threshold (SCT)  Qualification Threshold (QT) Integration of safety expertise into component selection, controlled extraction studies, leachables studies and routine extractables testing Integration of safety expertise into component selection, controlled extraction studies, leachables studies and routine extractables testing Analytical/chemistry Analytical/chemistry  Selection of components  Controlled Extraction Studies  Leachables Studies and Routine Extractables Testing  The Analytical Evaluation Threshold (AET)

Pharmaceutical Development Process for OINDP

Training Course Overview OINDP Container Closure Systems OINDP Container Closure Systems Safety Evaluation of Extractables and Leachables Safety Evaluation of Extractables and Leachables Analysis of Extractables and Leachables Analysis of Extractables and Leachables Characterization of Extractables Characterization of Extractables Characterization of Leachables Characterization of Leachables Special Case Compounds Special Case Compounds Quality Control and Specification Setting Quality Control and Specification Setting Team-based Activity Team-based Activity Panel Discussion Panel Discussion

Faculty Dan Norwood – Director Physical and Chemical Analysis, Boehringer Ingelheim Pharmaceuticals, Inc. (Working Group Chair) Diane Paskiet – Associate Director of Analytical Laboratories, West Monarch Analytical Labs Tom Feinberg – Senior Director, Pharmaceutical Development, Cardinal Health Doug Ball – Research Fellow, Drug Safety, Pfizer, Inc. (Toxicology Sub-group Chair) Terry Tougas – Highly Distinguished Scientist (BIPI) (DPTC Chair)

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